NBME CBSE ACTUAL TEST QUESTIONS AND
ANSWERS (QUIZ BANK WITH ALL THE CORRECT
ANSWERS) (USMLE STEP 1)
MEDICAL EXAMINATION NEW UPDATE 2022/2023
62 year old woman - osteoporosis - a bisphosphonate is prescribed. The expected beneficial effect
of the drug is due to which of the following? -Answer= Decreased Osteoclast Activity
Cohot Study of elderly women - relative risk ratio for hip fractures among those who exercise
regularly is 1.2 (95% confidence interval of 1.1 to 1.8). Which of the following is the conclusion
about the effect of exercise on the risk of hip fracture? -Answer= Statistically Significant Overall
Increase Risk
52 year old man goes to ER with chest pain radiating to his jaw while shoveling snow. Pulse is
80/min and blood pressure is 130/70. The most immediate treatment mechanism of action? -
Answer= Increased nitric oxide concentration
24 year old woman - spilled hot grease on her left leg while working at a fast-food restaurant. Exam
of leg shows 7cm pink, soft, granular, edematous wound. The formation of this tissue was most
likely caused by increased activity of which? -Answer= a. Vascular Endothelial Growth Factor
VEGF - stimulates angiogenesiss.
TYPE III Collagen = Blood Vessels - early wound repair
27 year old man- MVC - skull x-ray shows a linear, nondepressed basal skull fracture - increased
serum osm and decreased urin osm. Following desmopressin urine osm increases. Desmopressin's
effect is due to the activation of which of the following? -Answer= a. Adenylyl Cyclase
,Adenylate Cyclase - ATP - CAMP -- PROTEKINASE A -- Ca v2
A 10 month old boy - 4 day history of fever and cough. He attends day care center. Chest exam
shows intercostal retractions along with bilateral, diffuse wheezes and expiratory rhonchi. The
infectious agent most likely has which of the following properties? -Answer= Mediation of Cell
Entry via a fusion protein
A 17 year old girl in ED - 15 minutes after being stung by a bee. Mild light headedness but no
difficulty swallowing- Bilateral wheezing - Which is most appropriate pharmacotherapy for this
patient? -Answer= B2- Agonist
14 year old boy - 2 day history of sore throat and fever that peaks in late afternoon. 1 week of
fatigue. He recentaly had sex with one partner. Physical exam show cervical lymphadenopathy and
pharyngeal erythema with a creamy exudate. DX? -Answer= Infectious Mononucleosis
,57 year old man - radiation therapy for squamous cell carcinoma of the lung. Despite therapy,
tumor increases in size and he dies 6 months later. The progressive tumor growth is due to a defect
in cell cycle arrest in which of the following phases of cell cycle? -Answer= G1
28 year old - lived in sub-Saharan Africa - until he came to the US. Temp of 100.4 - imaging shows
bilateral hydroureter and hydronephrosis. Biopsy shows marked fibrosis and scattered granulomas.
DX? -Answer= Schistosomiasis
A couple with a family history of a-thalassemia. Woman has one gene deletion and man has two
gene deletion. If the two gene is trans - what percentage of offspring will have a two gene deletion?
-Answer= 50%
previously healthy 40 year brought to emergency department by her husband - 2 day history of
fever, lethargy, confusion. PE shows scattered petechiae and ecchymoses over the lower
extremities - 3+ polychromasia and 3+ schistocytes and Low platelets Dx? -Answer= Thrombotic
Thrombocytopenia Purpura
16 year old boy - is admitted to the ER because of a knife wound to the left side of his chest. An X-
ray of the chest shows an air-fluid level in the left side of the chest, partial collapse of the left lung,
and the elevation of the stomach bubble. The mediastinum is midline. DX? -Answer=
Hemopneumpothorax under tension
49 year old woman - coronary artery disease - BP 140/90 - High Cholesterol, High LDL (190),
High triglycerides (350) - TX with atorvastatin and losartan. What are the effects on HDL and
, Triglycerides? -Answer= HDL increased
Triglycerides Decreased
73 yeare old - diffuse weakness and tingling of her arms and legs. Sensation and vibration and
position is decreased in all extremities. What vitamin deficiency? -Answer= Vitamin B12 -
(cyanocobalamin)
Tea and Toast - low B12 in diet
15 year old girl - 3 month history of acne - which is the underlying cause of the patients acne? -
Answer= Stimulation of Sebaceous Glands by androgens b. ACNE = Propionibacterium ACNE
4 year old from Brazil - PE shows single 12x10cm lesion in the right side of jaw with diffuse
regular edges. Photomicrographs of an incisional biopsy (looks like Burkitts Lymphoma/ Starry
night) - which of the processes most likely to occur in the region indicated by the arrow? -Answer=
Apoptosis
b. Endemic Burkitt lymphoma can happen in Brazil as well as Africa (jaw lesion, puffy face).
ANSWERS (QUIZ BANK WITH ALL THE CORRECT
ANSWERS) (USMLE STEP 1)
MEDICAL EXAMINATION NEW UPDATE 2022/2023
62 year old woman - osteoporosis - a bisphosphonate is prescribed. The expected beneficial effect
of the drug is due to which of the following? -Answer= Decreased Osteoclast Activity
Cohot Study of elderly women - relative risk ratio for hip fractures among those who exercise
regularly is 1.2 (95% confidence interval of 1.1 to 1.8). Which of the following is the conclusion
about the effect of exercise on the risk of hip fracture? -Answer= Statistically Significant Overall
Increase Risk
52 year old man goes to ER with chest pain radiating to his jaw while shoveling snow. Pulse is
80/min and blood pressure is 130/70. The most immediate treatment mechanism of action? -
Answer= Increased nitric oxide concentration
24 year old woman - spilled hot grease on her left leg while working at a fast-food restaurant. Exam
of leg shows 7cm pink, soft, granular, edematous wound. The formation of this tissue was most
likely caused by increased activity of which? -Answer= a. Vascular Endothelial Growth Factor
VEGF - stimulates angiogenesiss.
TYPE III Collagen = Blood Vessels - early wound repair
27 year old man- MVC - skull x-ray shows a linear, nondepressed basal skull fracture - increased
serum osm and decreased urin osm. Following desmopressin urine osm increases. Desmopressin's
effect is due to the activation of which of the following? -Answer= a. Adenylyl Cyclase
,Adenylate Cyclase - ATP - CAMP -- PROTEKINASE A -- Ca v2
A 10 month old boy - 4 day history of fever and cough. He attends day care center. Chest exam
shows intercostal retractions along with bilateral, diffuse wheezes and expiratory rhonchi. The
infectious agent most likely has which of the following properties? -Answer= Mediation of Cell
Entry via a fusion protein
A 17 year old girl in ED - 15 minutes after being stung by a bee. Mild light headedness but no
difficulty swallowing- Bilateral wheezing - Which is most appropriate pharmacotherapy for this
patient? -Answer= B2- Agonist
14 year old boy - 2 day history of sore throat and fever that peaks in late afternoon. 1 week of
fatigue. He recentaly had sex with one partner. Physical exam show cervical lymphadenopathy and
pharyngeal erythema with a creamy exudate. DX? -Answer= Infectious Mononucleosis
,57 year old man - radiation therapy for squamous cell carcinoma of the lung. Despite therapy,
tumor increases in size and he dies 6 months later. The progressive tumor growth is due to a defect
in cell cycle arrest in which of the following phases of cell cycle? -Answer= G1
28 year old - lived in sub-Saharan Africa - until he came to the US. Temp of 100.4 - imaging shows
bilateral hydroureter and hydronephrosis. Biopsy shows marked fibrosis and scattered granulomas.
DX? -Answer= Schistosomiasis
A couple with a family history of a-thalassemia. Woman has one gene deletion and man has two
gene deletion. If the two gene is trans - what percentage of offspring will have a two gene deletion?
-Answer= 50%
previously healthy 40 year brought to emergency department by her husband - 2 day history of
fever, lethargy, confusion. PE shows scattered petechiae and ecchymoses over the lower
extremities - 3+ polychromasia and 3+ schistocytes and Low platelets Dx? -Answer= Thrombotic
Thrombocytopenia Purpura
16 year old boy - is admitted to the ER because of a knife wound to the left side of his chest. An X-
ray of the chest shows an air-fluid level in the left side of the chest, partial collapse of the left lung,
and the elevation of the stomach bubble. The mediastinum is midline. DX? -Answer=
Hemopneumpothorax under tension
49 year old woman - coronary artery disease - BP 140/90 - High Cholesterol, High LDL (190),
High triglycerides (350) - TX with atorvastatin and losartan. What are the effects on HDL and
, Triglycerides? -Answer= HDL increased
Triglycerides Decreased
73 yeare old - diffuse weakness and tingling of her arms and legs. Sensation and vibration and
position is decreased in all extremities. What vitamin deficiency? -Answer= Vitamin B12 -
(cyanocobalamin)
Tea and Toast - low B12 in diet
15 year old girl - 3 month history of acne - which is the underlying cause of the patients acne? -
Answer= Stimulation of Sebaceous Glands by androgens b. ACNE = Propionibacterium ACNE
4 year old from Brazil - PE shows single 12x10cm lesion in the right side of jaw with diffuse
regular edges. Photomicrographs of an incisional biopsy (looks like Burkitts Lymphoma/ Starry
night) - which of the processes most likely to occur in the region indicated by the arrow? -Answer=
Apoptosis
b. Endemic Burkitt lymphoma can happen in Brazil as well as Africa (jaw lesion, puffy face).
